Titanite CL spectrum, 20 keV e<sup>-</sup> beam, Torpy <i>et al.</i> 2020

Titanite CL spectrum, 20 keV e^- beam, Torpy et al. 2020

Description	CL spectrum of Titanite from Tista River, Bangladesh
Reference	Torpy et al. 2020 Torpy, A., Wilson, N., MacRae, C., Pownceby, M., Biswas, P., Rahman, M., & Zaman, M. (2020). Deciphering the Complex Mineralogy of River Sand Deposits through Clustering and Quantification of Hyperspectral X-Ray Maps. Microscopy and Microanalysis, 26(4), 768-792 https://doi.org/10.1017/S143192762000135X
Date measured	2018-05-07
Material	Titanite [ CaTiSiO₅ ] Titanite on amphibole, from Wannenköpfe, Ochtendung, Eifel region, Germany. Image width: 2mm © 2010 Fred Kruijen (via Wikimedia Commons), CC-BY-SA-3.0
Specimen	Tista 2020 D4 Zircon conc [CSIRO], Teesta River, Bangladesh Image of a specimen of Zircon from Tista River, Bangladesh © (C) 2020 CSIRO Mineral Resources
Technique	Cathodoluminescence (CL)
Instrument	JEOL 8500F
Probe	20 keV electron beam
Beam current	69.95 nA
Probe diameter	2 μm
Acquisition time	349.541 s
Channel count	1024
Energy range	1.69726 … 3.55856 eV
Intensity range	747.851 (normalised intensity)
Related measurement	Titanite EDS spectrum, 20 keV e^- beam, Torpy et al. 2020 (co-measured)
Lines	Intrinsic 2.258 eV (100%), Sm³⁺ 2.06488 eV (58.7%)

Nominal composition of Titanite [ CaTiSiO₅ ].
Element	Atoms	At%	Wt%
Ca	1	12.5	20.4
Ti	1	12.5	24.4
Si	1	12.5	14.3
O	5	62.5	40.8